Home / 1,329,075.40-1,993,904.70-430,364.20

Finding the Fourth Proportional to 1,329,075.40, 1,993,904.70 and 430,364.20

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Solution

The fourth proportional to 1,329,075.40, 1,993,904.70 and 430,364.20 is: 645,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,075.40 : 1,993,904.70 = 430,364.20 : x
  2. Step 2: Convert to fraction form
    1,329,075.40/1,993,904.70 = 430,364.20/x
  3. Step 3: Cross multiply
    1,329,075.40x = 1,993,904.70 × 430,364.20
  4. Step 4: Simplify right side
    1,329,075.40x = 858,105,201,091.74
  5. Step 5: Solve for x
    x = 858,105,201,091.74/1,329,075.40
  6. Step 6: Final answer
    x = 645,640.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.